To Know or Not to Know? Theta and Delta Reflect Complementary Information about an Advanced Cue before Feedback in Decision-Making.
To Know or Not to Know? Theta and Delta Reflect Complementary Information about an Advanced Cue before Feedback in Decision-Making.
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知道还是不知道？
DOI：
10.3389/fpsyg.2016.01556
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发表时间：
2016
影响因子：
3.8
通讯作者：
Li H
中科院分区：
文献类型：
--
作者：
Wang J;Chen Z;Peng X;Yang T;Li P;Cong F;Li H
在社会背景下研究强化学习过程中的脑活动是一个日益引起研究兴趣的课题。以往的研究主要集中在通过测量事件相关电位来评估强化学习任务中的脑电反馈。很少有研究调查线索的时频分布，以表明决策后是否有后续反馈可用。此外，目前还不清楚线索的Tf曲线是否与反馈相关的不同代理相互作用。在这项研究中，我们使用传递函数的方法来测试线索刺激在三种不同条件下(“自我”、“他人”和“计算机”)的脑电振荡。结果表明，在线索开始后200-350ms内，反馈不可用线索比反馈可用线索更能引起中央-后方三角洲功率的增加，但仅在自身条件下。此外，与三个机构之间的反馈可用线索相反，额叶-中央theta振荡在跟随反馈不可用线索时具有更强的动力。这些发现表明，知道结果的线索产生了类似奖励预测误差的信号，这些信号在决策过程中被Delta和theta振荡反映出来。更重要的是，本研究表明，在决策反馈之前，theta和Delta振荡反映了高级线索加工的可分离成分。
To investigate brain activity during the reinforcement learning process in social contexts is a topic of increasing research interest. Previous studies have mainly focused on using electroencephalograms (EEGs) for feedback evaluation in reinforcement learning tasks by measuring event-related potentials. Few studies have investigated the time–frequency (TF) profiles of a cue that manifested whether a following feedback is available or not after decision-making. Moreover, it remains unclear whether the TF profiles of the cue interact with different agents to whom the feedback related. In this study we used the TF approach to test EEG oscillations of the cue stimuli in three agents (‘Self’, ‘Other’, and ‘Computer’) conditions separately. The results showed that the increased central-posterior delta power was elicited by the feedback unavailable cues more so than with the feedback available cue within 200–350 ms after the onset of the cue, but only in the self-condition. Moreover, a frontal-central theta oscillation had enhanced power when following the feedback unavailable cue as opposed to the feedback available cue across three agencies. These findings demonstrated that the cue for knowing an outcome produced reward prediction error-like signals, which were mirrored by the delta and theta oscillations during decision-making. More importantly, the present study demonstrated that the theta and delta oscillations reflected separable components of the advanced cue processing before the feedback in decision-making.
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影响因子：
2.9
作者：
Han, Chunhui;Li, Peng;Li, Hong
通讯作者：
Li, Hong
影响因子：
3
作者：
Bernat, Edward M.;Malone, Stephen M.;Iacono, William G.
通讯作者：
Iacono, William G.
影响因子：
3.7
作者：
Hajihosseini, Azadeh;Holroyd, Clay B.
通讯作者：
Holroyd, Clay B.
影响因子：
5.7
作者：
HajiHosseini, Azadeh;Rodriguez-Fornells, Antoni;Marco-Pallares, Josep
通讯作者：
Marco-Pallares, Josep
影响因子：
5.7
作者：
Cavanagh, James F.
通讯作者：
Cavanagh, James F.